Question

I fix all warnings and now I have such error in my AppDelegate Class

.h file is

#import <UIKit/UIKit.h>

@interface UYLAppDelegate : UIResponder <UIApplicationDelegate>{

}

@property (retain, nonatomic) IBOutlet UIWindow *window;
@property (retain, nonatomic) IBOutlet UISplitViewController *splitViewController;

@end

.m file is

#import "UYLAppDelegate.h"
#import "UYLMasterViewController.h"
#import "UYLDetailViewController.h"
#import <QuartzCore/QuartzCore.h>

@implementation UYLAppDelegate

@synthesize window = _window;
@synthesize splitViewController = _splitViewController;

- (void)dealloc
{
    [_window release];
    [_splitViewController release];
    [super dealloc];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    UIView *rootView = [[self.splitViewController.viewControllers objectAtIndex:0] view];
    rootView.layer.borderWidth = 1.0f;
    rootView.layer.cornerRadius =5.0f;
    rootView.layer.shadowOpacity = 0.8f;
    rootView.layer.shadowOffset = CGSizeMake(-5, 0);

    self.window.rootViewController = self.splitViewController; //error here
    [self.window makeKeyAndVisible];
    return YES;
}

@end

in this row I take an error

self.window.rootViewController = self.splitViewController; //error here

SplitViewController consist of 2 controllers, .h file are:

#import <UIKit/UIKit.h>

@class UYLDetailViewController;

@interface UYLMasterViewController : UITableViewController

@property (retain, nonatomic) IBOutlet UYLDetailViewController *detailViewController;

@end

and the second

#import <UIKit/UIKit.h>
#import "UYLModalViewController.h"

@class UYLMasterViewController;

@interface UYLDetailViewController : UIViewController <UYLModalViewControllerDelegate>{
    UIBarButtonItem *_MessageButton;
    NSInteger modalViewShowType;
}

-(IBAction)buttonTapped:(id)sender;

@property (retain, nonatomic, getter=_MessageButton) IBOutlet UIBarButtonItem *someMessageButton;
@property (retain, nonatomic) NSNumber *detailItem;
@property (retain, nonatomic) IBOutlet UIToolbar *toolbar;
@property (retain, nonatomic) IBOutlet UILabel *detailTitle;
@property (retain, nonatomic) IBOutlet UILabel *detailDescriptionLabel;
@property (assign, nonatomic) BOOL masterIsVisible;

@end

edit:
there is all I see in console

GNU gdb 6.3.50-20050815 (Apple version gdb-1708) (Mon Aug 15 16:03:10 UTC 2011)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin".sharedlibrary apply-load-rules all
Attaching to process 8217.
Pending breakpoint 1 - ""UYLDetailViewController.m":117" resolved
Pending breakpoint 2 - ""UYLModalViewController.m":30" resolved
Pending breakpoint 3 - ""UYLModalViewController.m":41" resolved
Pending breakpoint 4 - ""UYLDetailViewController.m":63" resolved
Pending breakpoint 5 - ""UYLMasterViewController.m":46" resolved
Pending breakpoint 7 - ""UYLDetailViewController.m":36" resolved
No breakpoint number 7.
Current language:  auto; currently objective-c

Please help me to understand it =(

Answer 1

I had some SIGABRT errors most of the time, it just means that it can’t find that instance you are referring to. So look at that line again and think what might not be declared right.

I think it might help if you change it to.
self.window.rootViewController = splitViewController;